Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes
White light-emitting diodes (WLEDs) is widely concerned as the next-generation source of displays and lighting on account of many advantages. In this work, Sm ^3+ ions were introduced into Ca _9 Nd(PO _4 ) _7 : Eu ^3+ (CNPO: Eu ^3+ ) red phosphors as a co-dopant to boost the blue-light excitation. X...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac1f89 |
| _version_ | 1797746841875382272 |
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| author | Jianwen Zhao Jun Dong Jian Zhou Linsheng Wang |
| author_facet | Jianwen Zhao Jun Dong Jian Zhou Linsheng Wang |
| author_sort | Jianwen Zhao |
| collection | DOAJ |
| description | White light-emitting diodes (WLEDs) is widely concerned as the next-generation source of displays and lighting on account of many advantages. In this work, Sm ^3+ ions were introduced into Ca _9 Nd(PO _4 ) _7 : Eu ^3+ (CNPO: Eu ^3+ ) red phosphors as a co-dopant to boost the blue-light excitation. X-ray diffraction (XRD) data confirm the successful preparation of the materials. Rietveld refinements were employed to investigate the site occupation and lattice parameter variation. All obtained materials have showed red emission under blue light or near-ultraviolet light excitation. The photoluminescence (PL) emission spectra features both signals from the two dopants, and the introduction of Sm ^3+ could effectively boost the red-light emission and blue-light excitation. Theoretical simulations help evidence the capability of the CNPO materials as host matrix of luminescent centers. Finally, a blue LED chip-based WLED was assembled in demonstration of their potential applications. Compared to the controlling device made with Eu ^3+ single-doped samples, the co-doped one has stronger blue light excitation and red light emission that guarantees a high luminous efficacy of over 90 lm W ^−1 . The device also shows a superb long-term stability under continuous working. All in all, the CNPO: Eu ^3+ , Sm ^3+ phosphors have shown many promising aspects in blue chip-based WLED applications. |
| first_indexed | 2024-03-12T15:42:32Z |
| format | Article |
| id | doaj.art-da369cbd5e104cf0a2ca60f9eca0de0d |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:32Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-da369cbd5e104cf0a2ca60f9eca0de0d2023-08-09T15:54:32ZengIOP PublishingMaterials Research Express2053-15912021-01-018909620110.1088/2053-1591/ac1f89Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodesJianwen Zhao0https://orcid.org/0000-0001-8701-7371Jun Dong1Jian Zhou2Linsheng Wang3https://orcid.org/0000-0001-5066-0494School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology , Ganzhou 341000, People’s Republic of China; Ganzhou Lijian New Material Technology Co., Ltd , Ganzhou 341000, People’s Republic of ChinaSchool of Resources, Environment and Jewelry, Jiangxi College of Applied Technology, Ganzhou 341000, People’s Republic of ChinaSchool of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology , Ganzhou 341000, People’s Republic of China; Ganzhou Lijian New Material Technology Co., Ltd , Ganzhou 341000, People’s Republic of ChinaSchool of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology , Ganzhou 341000, People’s Republic of China; National Engineering Research Center for Ionic Rare Earth , Ganzhou 341000, People’s Republic of ChinaWhite light-emitting diodes (WLEDs) is widely concerned as the next-generation source of displays and lighting on account of many advantages. In this work, Sm ^3+ ions were introduced into Ca _9 Nd(PO _4 ) _7 : Eu ^3+ (CNPO: Eu ^3+ ) red phosphors as a co-dopant to boost the blue-light excitation. X-ray diffraction (XRD) data confirm the successful preparation of the materials. Rietveld refinements were employed to investigate the site occupation and lattice parameter variation. All obtained materials have showed red emission under blue light or near-ultraviolet light excitation. The photoluminescence (PL) emission spectra features both signals from the two dopants, and the introduction of Sm ^3+ could effectively boost the red-light emission and blue-light excitation. Theoretical simulations help evidence the capability of the CNPO materials as host matrix of luminescent centers. Finally, a blue LED chip-based WLED was assembled in demonstration of their potential applications. Compared to the controlling device made with Eu ^3+ single-doped samples, the co-doped one has stronger blue light excitation and red light emission that guarantees a high luminous efficacy of over 90 lm W ^−1 . The device also shows a superb long-term stability under continuous working. All in all, the CNPO: Eu ^3+ , Sm ^3+ phosphors have shown many promising aspects in blue chip-based WLED applications.https://doi.org/10.1088/2053-1591/ac1f89red phosphorsCo-dopingluminescent propertyblue light excitationWLEDs |
| spellingShingle | Jianwen Zhao Jun Dong Jian Zhou Linsheng Wang Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes Materials Research Express red phosphors Co-doping luminescent property blue light excitation WLEDs |
| title | Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes |
| title_full | Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes |
| title_fullStr | Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes |
| title_full_unstemmed | Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes |
| title_short | Enhancing blue light absorption by Sm3+ Co-doing in Ca9Nd(PO4)7: Eu3+ for white light-emitting diodes |
| title_sort | enhancing blue light absorption by sm3 co doing in ca9nd po4 7 eu3 for white light emitting diodes |
| topic | red phosphors Co-doping luminescent property blue light excitation WLEDs |
| url | https://doi.org/10.1088/2053-1591/ac1f89 |
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